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creep-rupture failure

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Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003545
EISBN: 978-1-62708-180-1
.... Change in elastic modulus with temperature cannot be neglected at higher homologous temperatures. Parametric modeling of creep or stress-rupture behavior often normalizes the stress with the modulus. One way to avoid creep failure is to select the proper alloy based on parametric extrapolation...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006780
EISBN: 978-1-62708-295-2
... Abstract The principal types of elevated-temperature mechanical failure are creep and stress rupture, stress relaxation, low- and high-cycle fatigue, thermal fatigue, tension overload, and combinations of these, as modified by environment. This article briefly reviews the applied aspects...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003291
EISBN: 978-1-62708-176-4
... in engineering design, both in the low and high temperature ranges. It has been found to govern the deformation of materials under complex loading situations. It is also the controlling parameter for creep rupture at high stresses where the rupture is associated with large deformations and a ductile failure...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003288
EISBN: 978-1-62708-176-4
.... Creep-rupture experiments measure the deformation as a function of time to failure. If strain-time behavior is measured, but the test is stopped before failure, this is termed an interrupted creep experiment . Finally, if an inadequate strain-measuring system or no attempt to determine length...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0009218
EISBN: 978-1-62708-176-4
... Abstract This article presents typical problems encountered in the analysis of experimental creep and creep-rupture data and the possible solutions to these drawbacks. It provides information on planning the test and creep strain/time relationships. The exponential creep equation...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003289
EISBN: 978-1-62708-176-4
... the same alloy group. Equation 7 enables assessment of the reliability of each individual test by examining its fit within the scatter band for all tests. Once a minimum creep rate has been determined in a low-stress test, rupture life can be estimated without running the test to failure. Although...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002387
EISBN: 978-1-62708-193-1
... Abstract This article focuses on the subject of proactive or predictive maintenance with particular emphasis on the control and prediction of corrosion damage for life extension and failure prevention. It discusses creep life assessment from the perspective of creep-rupture properties...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003512
EISBN: 978-1-62708-180-1
... Cavitation and creep voids in welds resulting in catastrophic high-energy rupture Development of elevated-temperature life assessment techniques for cavitation and creep failure Aloha Incident, Boeing 737 ( Ref 13 ) 1988 Accelerated corrosion and multiple fatigue crack-initiation sites in riveted...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006765
EISBN: 978-1-62708-295-2
... Abstract Metallographic examination is one of the most important procedures used by metallurgists in failure analysis. Typically, the light microscope (LM) is used to assess the nature of the material microstructure and its influence on the failure mechanism. Microstructural examination can...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006760
EISBN: 978-1-62708-295-2
... place before separation. Fig. 9 (a) Shear test of austenitic stainless steel. (b) High amount of deformation. Beginning of separation in 304 stainless steel. Marble’s etch Creep is caused by a combination of stress and temperature that exceeds the long-term strength limits of the material...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002385
EISBN: 978-1-62708-193-1
..., but because by far the longest time is spent in the growth of much smaller cracks, it is justifiable to use LEFM to obtain the time for crack growth with good accuracy. A notable exception is creep crack growth. Reports of a number of fracture-mechanics-based failure analyses have been published...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001818
EISBN: 978-1-62708-180-1
... explains the failure of pressure vessels with emphasis on stress-corrosion cracking, hydrogen embrittlement, brittle and ductile fractures, creep and stress rupture, and fatigue with examples. brittle fracture composite creep rupture ductile fracture fabrication failure analysis fatigue...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003543
EISBN: 978-1-62708-180-1
...-stress rupture has ductile appearance (see creep) • Load exceeded the dynamic strength of the part• Check for proper alloy and processing as well as proper toughness, grain size• Loading direction may show failure was secondary or impact induced• Low temperatures • Cyclic stress exceeded the endurance...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003520
EISBN: 978-1-62708-180-1
... should determine the hardness and mechanical properties of the subject material and any other properties that relate to failure mechanisms, such as the toughness, endurance limit, creep strength, or stress-corrosion cracking tendency. Many test procedures have been developed to characterize...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003501
EISBN: 978-1-62708-180-1
... be expected in a production situation? Are too many special (tight) tolerances required to make the part work well? Creep If creep is a possibility, will it result in loss of functionality? Strain and deformation If functional performance is sensitive to retention of size and shape, can...
Series: ASM Handbook
Volume: 20
Publisher: ASM International
Published: 01 January 1997
DOI: 10.31399/asm.hb.v20.a0002458
EISBN: 978-1-62708-194-8
... Mechanism Percentage of failures Engineering components Aircraft components Corrosion 29 3 Fatigue 25 61 Brittle fracture 16 … Overload 11 18 High-temperature corrosion 7 2 SCC/corrosion fatigue/HE 6 8 Creep 3 … Stress rupture … 1 Wear, abrasion/erosion 3...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006753
EISBN: 978-1-62708-295-2
... Abstract This article briefly introduces the concepts of failure analysis, including root-cause analysis (RCA), and the role of failure analysis as a general engineering tool for enhancing product quality and failure prevention. It initially provides definitions of failure on several different...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003224
EISBN: 978-1-62708-199-3
... type Tension Torsion Compression Shear Creep Brittle type Integranular Transgranular Fatigue Porosity Causes of brittle fracture Manufacturing defects Hydrogen and caustic embrittlement Inherent brittleness Corrosion Stress corrosion Heat...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003525
EISBN: 978-1-62708-180-1
..., including catastrophic mechanisms, such as brittle fracture, ductile overload, creep rupture, environmental stress cracking, molecular degradation, and fatigue. In the case of failure involving fracture, the determination of the failure mode involves identifying how the crack initiated and how...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003526
EISBN: 978-1-62708-180-1
... future problems is in the redesign and analysis. Underestimating the loads or the effects of loads on a component often leads to time-dependent failure mechanisms such a fatigue and creep. Finite element analysis is very useful in quantifying subtle loading changes or cyclic loads that lead...